Welcome to the Canadian Meteorological and Oceanographic Society’s 49th Congress and the American Meteorological Society’s 13th Conference on Polar Meteorology and Oceanography. The joint-conference will be held from 31 May to 4 June, 2015 at the Whistler Conference Centre, Whistler, BC, Canada. The theme of the joint-conference is “Tropics to Poles: Advancing Science in High Latitudes”. The joint-conference will bring together a wide range of scientists from across Canada, the United States, and the world with a focus on topics in atmospheric and ocean sciences related to high latitudes.